I X them up at what ever height I need. I stab them into the ground and secure them with a Voile' ski strap for a front rest. If I have time and need, I set up my daypack as a rear rest.

Or I pull out a coil of rope. I carry 2 static ropes 11mm x 20m. long and 1 dynamic rope 10mm. 30m. long for hanging quarters and a 5mm X 30m. cord w/ throw bag.

All of the above I have used in rests of one kind or another.

Kudos. I'm not a good enough shot to start changing up my shooting system @ distances of 600 + yards so I have to stick with what I practice with, a bipod in front and a rear bag. I guess I could stick two poles in the ground, tie them up, pull out three bundles of rope and pick one, or use my back pack but it just seems easier to shoot the way I practice as much as possible. Like I said, I'm not that good a shot @ extreme distances.

Howdy Mike. I've not used conventional bipods or sticks in a long time. This style of shooting I do was born of convenience and on the spot necessity. It keeps my load weight down some. So now this is how I practice both at the range and in the woods.
My Lead Sled got "lifted" out of the back of my truck and I haven't even owned a bench rest system since.
Edit 9/12 - I never said I was a great shot. Just making due with what is at hand. Working hard to keep it tight. For the record- I've never killed anything at 600yds.